Computer Programming Problem
Hello experienced programmers... I am currently a freshman EE major and I am required to take one course of computer programming for my major... I have an interesting problem, I don't understand a darn thing in my C++ class...
I have 6 homework problems and any help would be greatly appreciated...
1. Write a program to input a series of 12 integers from the keyboard and store them in a one-dimensional array, x[12], then displayed them on the computer screen in reverse order.
2. Write a program to generate a series of 1000 random numbers and store them in a one-dimensional array, a[1000], then determine and store those numbers that are evenly divisible by 20 in another one-dimensional integer array, b[200]. Also, display those numbers on the computer screen.
3. Write a program to generate a series of 20 random numbers and store them in a one-dimensional array, x[20], then determine and display the minimum and maximum numbers.
4. Write a program to generate a series of 30 random numbers and store them in a one-dimensional array, x[3], then determine and display the minimum and maximum numbers.
5. Four experiments are performed and each experiment produces four test results. The results are tabulated as shown below. Write a program to store these results in a two-dimensional array, A[4][5], then use a nested for-loop to compute the average of the test results for each experiment and store it in the 5th column of the array. Print the array.
1st experiment results: | 23.2 | 34.8 | 53.7 | 19.5 |
2nd experiment results: | 34.8 | 42.9 | 28.6 | 35.4 |
3rd experiment results: | 24.5 | 29.5 | 32.0 | 19.3 |
4th experiment results: | 36.8 | 31.6 | 43.7 | 29.5 |
6. Using the srand( ) and rand ( ) C++ library functions, fill an array of 1000 numbers with random numbers that have been scaled to the range of 1 to 100 inclusive. Then determine and display the number of random numbers having bvalues between 1 and 50 and the number having values greater than 50. What do you expect the output counts to be?
What methods should I approach each problem with? I know how to simply begin each program, but effectively writing/typing one is beyond my level of understanding... Thanks for your time.
I have 6 homework problems and any help would be greatly appreciated...
1. Write a program to input a series of 12 integers from the keyboard and store them in a one-dimensional array, x[12], then displayed them on the computer screen in reverse order.
2. Write a program to generate a series of 1000 random numbers and store them in a one-dimensional array, a[1000], then determine and store those numbers that are evenly divisible by 20 in another one-dimensional integer array, b[200]. Also, display those numbers on the computer screen.
3. Write a program to generate a series of 20 random numbers and store them in a one-dimensional array, x[20], then determine and display the minimum and maximum numbers.
4. Write a program to generate a series of 30 random numbers and store them in a one-dimensional array, x[3], then determine and display the minimum and maximum numbers.
5. Four experiments are performed and each experiment produces four test results. The results are tabulated as shown below. Write a program to store these results in a two-dimensional array, A[4][5], then use a nested for-loop to compute the average of the test results for each experiment and store it in the 5th column of the array. Print the array.
1st experiment results: | 23.2 | 34.8 | 53.7 | 19.5 |
2nd experiment results: | 34.8 | 42.9 | 28.6 | 35.4 |
3rd experiment results: | 24.5 | 29.5 | 32.0 | 19.3 |
4th experiment results: | 36.8 | 31.6 | 43.7 | 29.5 |
6. Using the srand( ) and rand ( ) C++ library functions, fill an array of 1000 numbers with random numbers that have been scaled to the range of 1 to 100 inclusive. Then determine and display the number of random numbers having bvalues between 1 and 50 and the number having values greater than 50. What do you expect the output counts to be?
What methods should I approach each problem with? I know how to simply begin each program, but effectively writing/typing one is beyond my level of understanding... Thanks for your time.
All of these problems seem to revolve around filling an array. Do you know how to create/use arrays?
Larger problems can seem overwhelming, but really they are just a series of smaller problems. To learn to program, you need to learn how to break these problems down into smaller parts.
For example, take a look at #1:
Think about the steps involved in making this program.
1) Create an array
2) Get an interger from the user, put it in the array
3) repeat #2 until you fill up the array (hint: for loop)
4) print the array in reverse order
The other problems can be approached the same way. Just break them down and take them one step at a time.
Larger problems can seem overwhelming, but really they are just a series of smaller problems. To learn to program, you need to learn how to break these problems down into smaller parts.
For example, take a look at #1:
| 1. Write a program to input a series of 12 integers from the keyboard and store them in a one-dimensional array, x[12], then displayed them on the computer screen in reverse order. |
Think about the steps involved in making this program.
1) Create an array
2) Get an interger from the user, put it in the array
3) repeat #2 until you fill up the array (hint: for loop)
4) print the array in reverse order
The other problems can be approached the same way. Just break them down and take them one step at a time.
How do I create an array??? Our teacher has a foreign accent and is very difficult to understand; we as a class have a more than difficult time comprehending the daily lessons...
Check out the tutorials on this site for basics such as arrays.
http://cplusplus.com/doc/tutorial/arrays/
http://cplusplus.com/doc/tutorial/arrays/
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